When Harry Potter survived the Killing curse as a baby, nobody knew that so did his little sister Lizzie. Asleep in the other room, Voldemort did not know she existed and didn't find her. Severus Snape rescued the girl and raised her as his own; but she knew who she was. What happens when Lizzie and Harry meet?

A Quidditch match between Gryffindore and Slytherin fosters an bet between Rose Weasley and Scorpius Malfoy.